A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate
in the Unity community.
I just ran into this same thing trying to run in preview mode Ubuntu 18.04
This is odd but it freezes when I go to close it on Ubuntu 18.04
Okay so I did have to go back and upgrade all my latest Android SDK tools as well and drop back to JDK 8. That got me past this. Thanks
Downgrading did not fix for me. Please advise another work around(Sorry if this posts twice, something weird happened)
Count me as a +1. Its killing me this isn't supported.